| Clue | Source | Date |
|---|---|---|
| Golf ball material | The Washington Post | 26 Apr 2017 |
| Golf ball material | LA Times Daily | 26 Apr 2017 |
| Golf ball material | ||
| Golf ball material | ||
| Golf ball covering | ||
| Golf ball covering | ||
| Golf ball material | ||
| Golf ball material | ||
| Golf ball material | ||
| Gutta-percha alternative | ||
| Golf ball cover | ||
| Type of golf ball | ||
| Golf-ball cover gum | ||
| Golf-ball ingredient from the bully tree | ||
| Golf ball ingredient | ||
| Golfball gum | ||
| Golf-ball gum | ||
| South American rubber. | ||
| Bully tree. | ||
| The bully tree. |